column
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1997, 18(2): 129-138.
1997, 18(2): 151-155.
1997, 18(2): 156-162.
1997, 18(2): 157-161.
1997, 18(2): 163-170.
1997, 18(2): 177-182.
1997, 18(2): 183-184.
1997, 18(2): 189-196.
1997, 18(2): 213-219.
1997, 18(2): 221-227.
1997, 18(2): 229-234.